Electrodeposition and Characterization of Nanocrystalline Ni-Mo Catalysts for Hydrogen Production

被引：53

作者：

Halim, J. ^{[1
]}

Abdel-Karim, R. ^{[1
]}

El-Raghy, S. ^{[1
]}

Nabil, M. ^{[1
]}

Waheed, A. ^{[2
]}

机构：

[1] Cairo Univ, Dept Met, Fac Engn, Giza 12613, Egypt

[2] Nucl Res Ctr, Dept Met, Cairo 13759, Egypt

来源：

JOURNAL OF NANOMATERIALS | 2012年 / 2012卷

关键词：

ALLOY COATINGS; INDUCED CODEPOSITION; NICKEL MOLYBDENUM; W ALLOYS; EVOLUTION; CATHODES; MECHANISM; BEHAVIOR;

D O I：

10.1155/2012/845673

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ni-Mo nanocrystalline deposits (7-43 nm) with a nodular morphology were prepared by electrodeposition using direct current from citrate-ammonia solutions. They exhibited a single Ni-Mo solid solution phase. The size of the nodules increased as electroplating current density increased. The molybdenum content-estimated using EDX analysis-in the deposits decreased from about 31 to 11wt% as the current density increased from 5 to 80mA.cm(-2). The highest microhardness value (285 Hv) corresponded to nanodeposits with 23% Mo. The highest corrosion resistance accompanied by relatively high hardness was detected for electrodeposits containing 15% Mo. Mo content values between 11 and 15% are recommended for obtaining better electrocatalytic activity for HER.

引用

页数：9

共 28 条

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